* Version $Id$
*/
/*
- Copyright (C) 2002-2005 Kern Sibbald
+ Copyright (C) 2002-2006 Kern Sibbald
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
/* Forward referenced functions */
static void lock_changer(DCR *dcr);
static void unlock_changer(DCR *dcr);
+static bool unload_other_drive(DCR *dcr, int slot);
+
+/* Init all the autochanger resources found */
+bool init_autochangers()
+{
+ bool OK = true;
+ AUTOCHANGER *changer;
+ /* Ensure that the media_type for each device is the same */
+ foreach_res(changer, R_AUTOCHANGER) {
+ DEVRES *device;
+ foreach_alist(device, changer->device) {
+ /*
+ * If the device does not have a changer name or changer command
+ * defined, used the one from the Autochanger resource
+ */
+ if (!device->changer_name && changer->changer_name) {
+ device->changer_name = bstrdup(changer->changer_name);
+ }
+ if (!device->changer_command && changer->changer_command) {
+ device->changer_command = bstrdup(changer->changer_command);
+ }
+ if (!device->changer_name) {
+ Jmsg(NULL, M_ERROR, 0,
+ _("No Changer Name given for device %s. Cannot continue.\n"),
+ device->hdr.name);
+ OK = false;
+ }
+ if (!device->changer_command) {
+ Jmsg(NULL, M_ERROR, 0,
+ _("No Changer Command given for device %s. Cannot continue.\n"),
+ device->hdr.name);
+ OK = false;
+ }
+
+#ifdef xxx_needed
+ if (media_type == NULL) {
+ media_type = device->media_type; /* get Media Type of first device */
+ continue;
+ }
+ /* Ensure that other devices Media Types are the same */
+ if (strcmp(media_type, device->media_type) != 0) {
+ Jmsg(NULL, M_ERROR, 0,
+ _("Media Type not the same for all devices in changer %s. Cannot continue.\n"),
+ changer->hdr.name);
+ OK = false;
+ continue;
+ }
+#endif
+ }
+ }
+ return OK;
+}
+
/*
* Called here to do an autoload using the autochanger, if
int rtn_stat = -1; /* error status */
POOLMEM *changer;
+ if (!dev->is_autochanger()) {
+ return 0;
+ }
slot = dcr->VolCatInfo.InChanger ? dcr->VolCatInfo.Slot : 0;
/*
* Handle autoloaders here. If we cannot autoload it, we
* will return 0 so that the sysop will be asked to load it.
*/
- if (writing && dev->is_autochanger() && slot <= 0) {
+ if (writing && slot <= 0) {
if (dir) {
return 0; /* For user, bail out right now */
}
loaded = get_autochanger_loaded_slot(dcr);
- /* If tape we want is not loaded, load it. */
if (loaded != slot) {
- offline_or_rewind_dev(dev);
- /* We are going to load a new tape, so close the device */
- force_close_device(dev);
- lock_changer(dcr);
- if (loaded != 0 && loaded != -1) { /* must unload drive */
- Dmsg0(400, "Doing changer unload.\n");
- Jmsg(jcr, M_INFO, 0,
- _("3303 Issuing autochanger \"unload slot %d, drive %d\" command.\n"),
- loaded, drive);
- dcr->VolCatInfo.Slot = loaded; /* slot to be unloaded */
- changer = edit_device_codes(dcr, changer,
- dcr->device->changer_command, "unload");
- status = run_program(changer, timeout, NULL);
- if (status != 0) {
- berrno be;
- be.set_errno(status);
- Jmsg(jcr, M_FATAL, 0, _("3992 Bad autochanger \"unload slot %d, drive %d\": ERR=%s.\n"),
- slot, drive, be.strerror());
- goto bail_out;
- } else {
- dev->Slot = 0; /* nothing loaded now */
- }
- Dmsg1(400, "unload status=%d\n", status);
+
+ /* Unload anything in our drive */
+ if (!unload_autochanger(dcr, loaded)) {
+ goto bail_out;
}
+
+ /* Make sure desired slot is unloaded */
+ if (!unload_other_drive(dcr, slot)) {
+ goto bail_out;
+ }
+
/*
* Load the desired cassette
*/
+ lock_changer(dcr);
Dmsg1(400, "Doing changer load slot %d\n", slot);
Jmsg(jcr, M_INFO, 0,
_("3304 Issuing autochanger \"load slot %d, drive %d\" command.\n"),
dcr->VolCatInfo.Slot = slot; /* slot to be loaded */
changer = edit_device_codes(dcr, changer,
dcr->device->changer_command, "load");
+ offline_or_rewind_dev(dev);
+ force_close_device(dev);
status = run_program(changer, timeout, NULL);
if (status == 0) {
Jmsg(jcr, M_INFO, 0, _("3305 Autochanger \"load slot %d, drive %d\", status is OK.\n"),
be.set_errno(status);
Jmsg(jcr, M_FATAL, 0, _("3992 Bad autochanger \"load slot %d, drive %d\": ERR=%s.\n"),
slot, drive, be.strerror());
- goto bail_out;
+ rtn_stat = -1; /* hard error */
}
- unlock_changer(dcr);
Dmsg2(400, "load slot %d status=%d\n", slot, status);
+ unlock_changer(dcr);
} else {
status = 0; /* we got what we want */
dev->Slot = slot; /* set currently loaded slot */
bail_out:
free_pool_memory(changer);
- unlock_changer(dcr);
return -1;
}
/*
* Returns: -1 if error from changer command
* slot otherwise
+ * Note, this is safe to do without releasing the drive
+ * since it does not attempt load/unload a slot.
*/
int get_autochanger_loaded_slot(DCR *dcr)
{
uint32_t timeout = dcr->device->max_changer_wait;
int drive = dcr->dev->drive_index;
+ if (!dcr->device->changer_command) {
+ Jmsg(jcr, M_FATAL, 0, _("3992 Missing Changer command.\n"));
+ return -1;
+ }
+
results = get_pool_memory(PM_MESSAGE);
changer = get_pool_memory(PM_FNAME);
- lock_changer(dcr);
/* Find out what is loaded, zero means device is unloaded */
+ lock_changer(dcr);
Jmsg(jcr, M_INFO, 0, _("3301 Issuing autochanger \"loaded drive %d\" command.\n"),
drive);
changer = edit_device_codes(dcr, changer, dcr->device->changer_command, "loaded");
status = run_program(changer, timeout, results);
Dmsg3(50, "run_prog: %s stat=%d result=%s\n", changer, status, results);
if (status == 0) {
- loaded = atoi(results);
+ loaded = str_to_int32(results);
if (loaded > 0) {
Jmsg(jcr, M_INFO, 0, _("3302 Autochanger \"loaded drive %d\", result is Slot %d.\n"),
drive, loaded);
}
}
+/*
+ * Unload the volume, if any, in this drive
+ * On entry: loaded == 0 -- nothing to do
+ * loaded < 0 -- check if anything to do
+ * loaded > 0 -- load slot == loaded
+ */
+bool unload_autochanger(DCR *dcr, int loaded)
+{
+ DEVICE *dev = dcr->dev;
+ JCR *jcr = dcr->jcr;
+ int slot;
+ uint32_t timeout = dcr->device->max_changer_wait;
+ bool ok = true;
+
+ if (loaded == 0) {
+ return true;
+ }
+
+ if (!dev->is_autochanger() || !dcr->device->changer_name ||
+ !dcr->device->changer_command) {
+ return false;
+ }
+
+ if (loaded < 0) {
+ loaded = get_autochanger_loaded_slot(dcr);
+ }
+
+ if (loaded > 0) {
+ POOLMEM *changer = get_pool_memory(PM_FNAME);
+ lock_changer(dcr);
+ Jmsg(jcr, M_INFO, 0,
+ _("3307 Issuing autochanger \"unload slot %d, drive %d\" command.\n"),
+ loaded, dev->drive_index);
+ slot = dcr->VolCatInfo.Slot;
+ dcr->VolCatInfo.Slot = loaded;
+ changer = edit_device_codes(dcr, changer,
+ dcr->device->changer_command, "unload");
+ offline_or_rewind_dev(dev);
+ force_close_device(dev);
+ int stat = run_program(changer, timeout, NULL);
+ dcr->VolCatInfo.Slot = slot;
+ if (stat != 0) {
+ berrno be;
+ be.set_errno(stat);
+ Jmsg(jcr, M_INFO, 0, _("3995 Bad autochanger \"unload slot %d, drive %d\": ERR=%s.\n"),
+ slot, dev->drive_index, be.strerror());
+ ok = false;
+ } else {
+ dev->Slot = 0; /* nothing loaded */
+ }
+ free_pool_memory(changer);
+ unlock_changer(dcr);
+ }
+ return ok;
+}
+
+/*
+ * Unload the slot if mounted in a different drive
+ */
+static bool unload_other_drive(DCR *dcr, int slot)
+{
+ DEVICE *dev = NULL;
+ DEVICE *save_dev;
+ JCR *jcr = dcr->jcr;
+ int save_slot;
+ uint32_t timeout = dcr->device->max_changer_wait;
+ bool ok = true;
+ AUTOCHANGER *changer = dcr->dev->device->changer_res;
+ DEVRES *device;
+ bool found = false;
+ bool first = true;
+
+
+ if (!changer) {
+ return false;
+ }
+ if (changer->device->size() == 1) {
+ return true;
+ }
+
+ foreach_alist(device, changer->device) {
+ if (device->dev && device->dev->Slot == slot) {
+ found = true;
+ dev = device->dev;
+ break;
+ }
+ }
+ if (!found) {
+ return true;
+ }
+
+ /* The Volume we want is on another device. */
+
+ for (int i=0; i < 3; i++) {
+ if (dev->is_busy()) {
+ wait_for_device(dcr->jcr, first);
+ first = false;
+ continue;
+ }
+ break;
+ }
+ P(dev->mutex);
+ if (dev->is_busy()) {
+ Jmsg(jcr, M_WARNING, 0, _("Volume %s is in use by device %s\n"),
+ dcr->VolumeName, dev->print_name());
+ Dmsg2(200, "Volume %s is in use by device %s\n",
+ dcr->VolumeName, dev->print_name());
+ V(dev->mutex);
+ return false;
+ }
+
+ POOLMEM *changer_cmd = get_pool_memory(PM_FNAME);
+ lock_changer(dcr);
+ Jmsg(jcr, M_INFO, 0,
+ _("3307 Issuing autochanger \"unload slot %d, drive %d\" command.\n"),
+ slot, dev->drive_index);
+
+ Dmsg2(200, "Issuing autochanger \"unload slot %d, drive %d\" command.\n",
+ slot, dev->drive_index);
+
+ save_slot = dcr->VolCatInfo.Slot;
+ save_dev = dcr->dev;
+ dcr->dev = dev;
+ dcr->VolCatInfo.Slot = slot;
+ changer_cmd = edit_device_codes(dcr, changer_cmd,
+ dcr->device->changer_command, "unload");
+ Dmsg1(200, "Run program=%s\n", changer_cmd);
+ offline_or_rewind_dev(dev);
+ force_close_device(dev);
+ int stat = run_program(changer_cmd, timeout, NULL);
+ dcr->VolCatInfo.Slot = save_slot;
+ dcr->dev = save_dev;
+ if (stat != 0) {
+ berrno be;
+ be.set_errno(stat);
+ Jmsg(jcr, M_INFO, 0, _("3995 Bad autochanger \"unload slot %d, drive %d\": ERR=%s.\n"),
+ slot, dev->drive_index, be.strerror());
+
+ Dmsg3(200, "Bad autochanger \"unload slot %d, drive %d\": ERR=%s.\n",
+ slot, dev->drive_index, be.strerror());
+ ok = false;
+ } else {
+ dev->Slot = 0; /* nothing loaded */
+ Dmsg0(200, "Slot unloaded\n");
+ }
+ unlock_changer(dcr);
+ V(dev->mutex);
+ free_pool_memory(changer_cmd);
+ return ok;
+}
+
+
/*
* List the Volumes that are in the autoloader possibly
bool autochanger_cmd(DCR *dcr, BSOCK *dir, const char *cmd)
{
DEVICE *dev = dcr->dev;
- JCR *jcr = dcr->jcr;
uint32_t timeout = dcr->device->max_changer_wait;
POOLMEM *changer;
BPIPE *bpipe;
- int slot, loaded;
int len = sizeof_pool_memory(dir->msg) - 1;
bool ok = false;
int stat;
if (!dev->is_autochanger() || !dcr->device->changer_name ||
!dcr->device->changer_command) {
+ if (strcmp(cmd, "drives") == 0) {
+ bnet_fsend(dir, "drives=1\n");
+ }
bnet_fsend(dir, _("3993 Device %s not an autochanger device.\n"),
dev->print_name());
return false;
}
- changer = get_pool_memory(PM_FNAME);
/* List command? */
if (strcmp(cmd, "list") == 0) {
- int drive = dev->device->drive_index;
- /* Yes, to get a good listing, we unload any volumes */
- offline_or_rewind_dev(dev);
- /* We are going to load a new tape, so close the device */
- force_close_device(dev);
-
- /* First unload any tape */
- loaded = get_autochanger_loaded_slot(dcr);
- if (loaded > 0) {
- bnet_fsend(dir,
- _("3307 Issuing autochanger \"unload slot %d, drive %d\" command.\n"),
- loaded, drive);
- slot = dcr->VolCatInfo.Slot;
- dcr->VolCatInfo.Slot = loaded;
- changer = edit_device_codes(dcr, changer,
- dcr->device->changer_command, "unload");
- lock_changer(dcr);
- int stat = run_program(changer, timeout, NULL);
- unlock_changer(dcr);
- if (stat != 0) {
- berrno be;
- be.set_errno(stat);
- Jmsg(jcr, M_INFO, 0, _("3995 Bad autochanger \"unload slot %d, drive %d\": ERR=%s.\n"),
- slot, drive, be.strerror());
- } else {
- dev->Slot = 0; /* nothing loaded */
- }
- dcr->VolCatInfo.Slot = slot;
+ unload_autochanger(dcr, -1);
+ }
+ if (strcmp(cmd, "drives") == 0) {
+ AUTOCHANGER *changer_res = dcr->device->changer_res;
+ int drives = 1;
+ if (changer_res) {
+ drives = changer_res->device->size();
}
+ bnet_fsend(dir, "drives=%d\n", drives);
+ Dmsg1(100, "drives=%d\n", drives);
+ return true;
}
+ changer = get_pool_memory(PM_FNAME);
+ lock_changer(dcr);
/* Now issue the command */
changer = edit_device_codes(dcr, changer,
dcr->device->changer_command, cmd);
bnet_fsend(dir, _("3306 Issuing autochanger \"%s\" command.\n"), cmd);
- lock_changer(dcr);
bpipe = open_bpipe(changer, timeout, "r");
if (!bpipe) {
- unlock_changer(dcr);
bnet_fsend(dir, _("3996 Open bpipe failed.\n"));
goto bail_out;
}
Dmsg1(100, "<stored: %s\n", dir->msg);
bnet_send(dir);
}
- } else {
+ } else if (strcmp(cmd, "slots") == 0 ) {
+ char buf[100], *p;
/* For slots command, read a single line */
- bstrncpy(dir->msg, "slots=", len);
- fgets(dir->msg+6, len-6, bpipe->rfd);
- dir->msglen = strlen(dir->msg);
+ buf[0] = 0;
+ fgets(buf, sizeof(buf)-1, bpipe->rfd);
+ buf[sizeof(buf)-1] = 0;
+ /* Strip any leading space in front of # of slots */
+ for (p=buf; B_ISSPACE(*p); p++)
+ { }
+ bnet_fsend(dir, "slots=%s", p);
Dmsg1(100, "<stored: %s", dir->msg);
- bnet_send(dir);
- }
+ }
stat = close_bpipe(bpipe);
- unlock_changer(dcr);
if (stat != 0) {
berrno be;
be.set_errno(stat);
ok = true;
bail_out:
+ unlock_changer(dcr);
free_pool_memory(changer);
return true;
}
projects / bacula / bacula / blobdiff